Headlight with an air duct, headlight unit, and motor vehicle

Abstract

A headlight for a motor vehicle, the headlight having a housing, at least one light module in the housing for emitting light from the housing, an air duct with a longitudinal extent, and at least one fan for conducting air through the air duct, wherein the air duct is formed partly from an air guiding element, disposed inside housing, and partly from an outer wall of the housing. Further, a headlight unit and a motor vehicle are provided.

Claims

1. A headlight for a motor vehicle, the headlight comprising: a housing; at least one light module arranged in the housing for emitting light from the housing; an air duct with a longitudinal extent; and at least one fan to conduct air through the air duct, wherein the air duct is formed partly from an air guiding element disposed inside the housing and partly from an outer wall of the housing, and wherein the outer wall of the housing is outwardly curved with an enlarged surface in an area of the air duct.

2. The headlight according to claim 1, wherein the air guiding element is designed in one piece and/or monolithically, in particular in one piece and/or monolithically with the housing.

3. The headlight according to claim 1, wherein the housing has a smaller wall thickness in one area of the air duct than a wall thickness in at least one other area or in remaining areas of the housing.

4. The headlight according to claim 1, wherein the air guiding element has at least an air exit opening along the longitudinal extent of the air duct.

5. The headlight according to claim 1, wherein the at least one fan is disposed at an end face of the air duct and/or in the air duct.

6. The headlight according to claim 1, wherein the outer wall of the housing in an area of the air duct, has an enlarged surface.

7. The headlight according to claim 1, wherein the headlight has at least one air guiding body in the air duct, and wherein the at least one air guiding body is disposed and/or secured on an inner side of the housing and/or on an inner side of the air guiding element.

8. The headlight according to claim 1, wherein the air duct is disposed on a rear side along a main extent of the headlight and/or on at least two sides of the housing.

9. The headlight according to claim 1, wherein the air duct is divided, at least in sections, into at least two air subducts.

10. The headlight according to claim 1, wherein the outer wall of the housing in an area of the air duct has a material with an increased thermal conductivity relative to a material of the rest of the housing.

11. The headlight according to claim 1, wherein the outer wall of the housing in an area of the air duct, has a cooling element interface.

12. A headlight unit comprising: a headlight according to claim 11; and a cooling element comprising a fluid channel and/or a heat sink.

13. A motor vehicle comprising at least one headlight according to claim 1.

14. A motor vehicle comprising at least one headlight unit according to claim 12.

15. The headlight according to claim 1, wherein the air duct has an air inlet opening at a first end face of the air duct and an air outlet opening at a second end face of the air duct.

16. A headlight for a motor vehicle, the headlight comprising: a housing; at least one light module arranged in the housing for emitting light from the housing; an air duct with a longitudinal extent; and at least one fan to conduct air through the air duct, wherein the air duct is formed partly from an air guiding element disposed inside the housing and partly from an outer wall of the housing, and wherein the air guiding element is designed as a first half shell of the air duct and/or the housing in the area of the air duct is designed as a second half shell of the air duct.

17. A headlight for a motor vehicle, the headlight comprising: a housing; at least one light module arranged in the housing for emitting light from the housing; an air duct with a longitudinal extent; and at least one fan to conduct air through the air duct, wherein the air duct is formed partly from an air guiding element disposed inside the housing and partly from an outer wall of the housing, wherein the air duct has at least one air inlet opening at a first end face of the air duct and at least one air outlet opening at a second end face of the air duct, and wherein the headlight comprises a recirculation device in an area of the air outlet opening.

18. A headlight for a motor vehicle, the headlight comprising: a housing; at least one light module arranged in the housing for emitting light from the housing; an air duct with a longitudinal extent; at least one fan to conduct air through the air duct; and a recirculation device in an air outlet opening of the air duct, wherein the air duct is formed partly from an air guiding element disposed inside the housing and partly from an outer wall of the housing.

19. A headlight for a motor vehicle, the headlight comprising: a housing having an outer wall; a light module arranged in the housing; an air guiding element disposed inside the housing; and a fan configured to conduct air through the air duct, wherein the air guiding element and the housing form an air duct, and wherein the outer wall of the housing is outwardly curved with an enlarged surface in an area of the air duct.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The present invention will become more fully understood from the detailed description given hereinbelow and the accompanying drawings which are given by way of illustration only, and thus, are not limitive of the present invention, and wherein:

(2) FIG. 1 shows in a side view a headlight unit with a headlight and a cooling element;

(3) FIG. 2 shows in a top plan view a headlight; and

(4) FIG. 3 shows in a side view a motor vehicle with two headlights.

DETAILED DESCRIPTION

(5) FIG. 1 shows in a side view a headlight unit 90 with a headlight 10 for a motor vehicle 100 and a cooling element 92. Headlight 10 has a housing 20, a light module 12 in housing 20 for emitting light L from housing 20, an air duct 40, and a fan 60 for conducting air through air duct 40. Air duct 40 is formed partly from an air guiding element 30, disposed inside housing 20, and partly from an outer wall 22 of housing 20. Air guiding element 30 is shown spaced apart from housing 20 for better illustration. However, air guiding element 30 is preferably disposed in a form-fitting manner on housing 20 and/or connected thereto. Housing 20, in particular outer wall 22 of housing 20, has a smaller wall thickness D1 in one area of air duct 40 than a wall thickness D2 in at least one other area, in particular in the remaining areas of outer wall 22 of housing 20. Air guiding element 30 is designed in one piece and monolithically as a first half shell of air duct 40. Outer wall 22 of housing 20 has an enlarged surface in the area of air duct 40 due to an outwardly curved design as a second half shell and thus enables an improved heat transfer to the surroundings of headlight 10. Here, the enlarged surface enables an improved heat transfer to cooling element 92 disposed and secured on cooling element interface 70. Air duct 40 is disposed on a rear side 22 of headlight 10 and enables a design of headlight 10 that is advantageous in terms of installation space. The headlight of the invention 10 is particularly advantageous because the structural design of air duct 40 improves the cooling of the air in housing 20 and reduces the outlay of materials and costs for air duct 40.

(6) FIG. 2 shows a top plan view of a headlight 10 with an air duct 40. Air duct 40 comprises a fan 60 which is disposed at an end face of air duct 40. Air guiding element 30 has an air exit opening 32 along the longitudinal extent LE of air duct 40. Air exit opening 32 enables at least part of the air in air duct 40 to flow out of air duct 40 through air exit opening 32 into the interior of headlight 10. Headlight 10 further comprises an air guiding body 50 in air duct 40, wherein air guiding body 50 is disposed and secured on an inner side of housing 20 and on an inner side of air guiding element 30. A headlight 10 designed in this manner is particularly advantageous because air exit opening 32 and air guiding body 50 enable a selective air guidance and/or inflow and thus improved cooling of headlight 10. Air duct 40 has an air inlet opening 42 at a first end face of air duct 40 and an air outlet opening 44 at a second end face of air duct 40, wherein headlight 10 further comprises a recirculation device 80 in the area of air outlet opening 44. Air duct 40 is divided in areas into two air subducts 46. Air duct 40 in FIG. 2 is disposed on a rear side 24, transversely to a main extent HE of headlight 10 and only on one side of housing 20.

(7) FIG. 3 shows a motor vehicle 100 in a side view. Motor vehicle 100 has two headlights 10, which are mounted as front headlights, only one headlight 10 being visible due to the perspective of FIG. 3. A motor vehicle 100 designed in this way is particularly advantageous because cooling of the air in housing 20 of headlight 10 is improved with simple and inexpensive means and/or an outlay of materials and costs for the structural design of air duct 40 is reduced.

(8) The invention being thus described, it will be obvious that the same may be varied in many ways. Such variations are not to be regarded as a departure from the spirit and scope of the invention, and all such modifications as would be obvious to one skilled in the art are to be included within the scope of the following claims.